L@_@K
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD> <BODY>
<SCRIPT LANGUAGE="JavaScript">
<!--
function clearNoNum(obj)
{
//先把非数字的都替换掉,除了数字和.
obj.value = obj.value.replace(/[^\d.]/g,"");
//保证只有出现一个.而没有多个.
obj.value = obj.value.replace(/\.{2,}/g,".");
//必须保证第一个为数字而不是.
obj.value = obj.value.replace(/^\./g,"");
//保证.只出现一次,而不能出现两次以上
obj.value = obj.value.replace(".","$#$").replace(/\./g,"").replace("$#$",".");
// 小数点后只能输入2位。
obj.value = obj.value.match(/^\d*(\.?\d{2})?/ig);
}var obj = new Object();
obj.value = "a..12.0.13";
clearNoNum(obj);
alert(obj.value);
//-->
</SCRIPT>
</BODY>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD> <BODY>
<SCRIPT LANGUAGE="JavaScript">
<!--
function clearNoNum(obj)
{
//先把非数字的都替换掉,除了数字和.
obj.value = obj.value.replace(/[^\d.]/g,"");
//保证只有出现一个.而没有多个.
obj.value = obj.value.replace(/\.{2,}/g,".");
//必须保证第一个为数字而不是.
obj.value = obj.value.replace(/^\./g,"");
//保证.只出现一次,而不能出现两次以上
obj.value = obj.value.replace(".","$#$").replace(/\./g,"").replace("$#$",".");
// 小数点后只能输入2位。
obj.value = obj.value.match(/^\d*(\.?\d{2})?/ig);
}var obj = new Object();
obj.value = "a..12.0.13";
clearNoNum(obj);
alert(obj.value);
//-->
</SCRIPT>
</BODY>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD> <BODY>
<INPUT TYPE="text" id="txtInput" />
<SCRIPT LANGUAGE="JavaScript">
<!--
function clearNoNum(obj)
{
//先把非数字的都替换掉,除了数字和.
obj.value = obj.value.replace(/[^\d.]/g,"");
//保证只有出现一个.而没有多个.
obj.value = obj.value.replace(/\.{2,}/g,".");
//必须保证第一个为数字而不是.
obj.value = obj.value.replace(/^\./g,"");
//保证.只出现一次,而不能出现两次以上
obj.value = obj.value.replace(".","$#$").replace(/\./g,"").replace("$#$",".");
// 小数点后只能输入2位。
obj.value = obj.value.match(/^\d*\.?(\d{2})?/ig);
}
var oTxt = document.getElementById("txtInput");
oTxt.onchange = function() {
clearNoNum(this);
};
oTxt.onkeyup = function() {
clearNoNum(this);
};
//var obj = new Object();
//obj.value = "a..12.0.13";
//clearNoNum(obj);
//alert(obj.value);
//-->
</SCRIPT>
</BODY>
</HTML>
L@_@K
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD> <BODY>
<INPUT TYPE="text" id="txtInput" />
<SCRIPT LANGUAGE="JavaScript">
<!--
function clearNoNum(obj)
{
//先把非数字的都替换掉,除了数字和.
obj.value = obj.value.replace(/[^\d.]/g,"");
//保证只有出现一个.而没有多个.
obj.value = obj.value.replace(/\.{2,}/g,".");
//必须保证第一个为数字而不是.
obj.value = obj.value.replace(/^\./g,"");
//保证.只出现一次,而不能出现两次以上
obj.value = obj.value.replace(".","$#$").replace(/\./g,"").replace("$#$",".");
// 小数点后只能输入2位。
obj.value = obj.value.match(/^\d*\.?(\d{0,2})?/ig);
}
var oTxt = document.getElementById("txtInput");
oTxt.onchange = function() {
clearNoNum(this);
};
oTxt.onkeyup = function() {
clearNoNum(this);
};
//var obj = new Object();
//obj.value = "a..12.0.13";
//clearNoNum(obj);
//alert(obj.value);
//-->
</SCRIPT>
</BODY>
</HTML>